From ac2874b980e05ed7a4ea8fed7b0a92428b51ce58 Mon Sep 17 00:00:00 2001
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 1 Jul 2010 16:47:31 -0700
Subject: drm: add vblank event trace point

Emit a trace point for vblank events.  This can be helpful for mapping
drawing activity against the vblank frequency and period.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/drm_irq.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'drivers/gpu/drm/drm_irq.c')

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index a263b7070fc6..6d201a89441c 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -34,6 +34,7 @@
  */
 
 #include "drmP.h"
+#include "drm_trace.h"
 
 #include <linux/interrupt.h>	/* For task queue support */
 #include <linux/slab.h>
@@ -754,6 +755,8 @@ void drm_handle_vblank_events(struct drm_device *dev, int crtc)
 	}
 
 	spin_unlock_irqrestore(&dev->event_lock, flags);
+
+	trace_drm_vblank_event(crtc, seq);
 }
 
 /**
-- 
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